env: Simplify env_get_default()

Instead of pretending that we don't have environment to force searching
default environment in env_get_default(), get the data from the
default_environment[] buffer directly.

Signed-off-by: Marek BehĂșn <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed